Attachment foe plows



V(No Model.)

C. W. MGCORMIOK.

ATTACHMENT FOR PLOWS.

Pat nted Jul 7 1885.

Q7/ Q )IE5/ i WI TJV ESSES @ci @MMU-f .m um., wowuwanur UNrTnio STATES PATENT Trice.

CHARLES YV. MCCORMIOK, OF EMPORIA, KANSAS, ASSIGNOR OF ONE HALF TO ALBERT LOVE.

ATTACHMENT FOR PLOWS.

{JPECIFICATION forming part of Letters Patent No. 321,906, dated July 7, 1885.

Application filed March 25,1865.

To LH whom it may concern:

Be it known that I, CHARLES W. McCon- MIGK, a citizen of the United States of America, residing at Emporia, in the county of Lyon and State of Kansas, have invented certain new and useful Improvements in Attachments for Ilows; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled [C in the art to which it appertains to make and use the same, reference being. had to the acco mpanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to colter attachments for plows; and it consists in the improvements hereinafter fully explained and set forth.

In the accompanying drawings, which illustrate my invention, Figure l is a perspective 2O view of my improvement; Fig. 2, a side view of `the stationary colter; Fig. 3, an end view of the same; Fig. 4, a side view of the rotary cutter, and Fig. 5 a transverse section.

A represents a plow-beam, to which the stationary colter B is attached in the usual manner. rIhis stationary colter B has its lower end curved, as shown in.Fig..2, so as to provide a sickleshaped outtingedge, and the lower portion of the -colter has attached thereto a plate, B', of hard metal-as steel-which plate will project slightly above the side of the stationary colter. Above this plate the colter is provided with a bearing for the pivot-bolt G,'the bearing having an offset therein, as

shown in'Fig. 3, against which the shoulder c of the pivot-bolt C will abut. The lower portion of the shank of the stationary colter is provided with an arched or curved rib, b,

which projects from the side of the colter, so

4o as to be flush with the surface of the steel plate B at the lower end of the colter by the construction hereinbefore described. It will be readily seen that a recess, f, is formed between the steel plate which is attached to the colter and the rib b. The rotary wheel or cutter D is provided with a series of radial arms, which are curved on their inner sides, said arms terminating in points. The center portion of the rotary cutter is provided with (No model.)

one or more pins, el, which will play immedi- 5o ately above the rib or projection b of the stationary colter, and the surface of this rotary cutter is a perfect plane, and is provided with a chilled surface, so that the cutting-edges of the radial arms will not wear away rapidly. rlhe opposite side of the rotary cutter is provided, adjacent to its central bearing, with a projecting iiange, e, which will form a hollow or recess within which will lie the head of the pivot-bolt.

The advantages which I attain by the construction hereinbefore described over prior patents, especially over the patent of J. W. Baker, dated May 23, 1871, are as follows: By providing` the stationary colter with the rib b dirt is prevented having access to the bearing, and will therefore prevent the excessive wearing of the parts upon each other, and the projecting pin d on the rotary cutter will remove what dirt may fall upon this rib. 7o The steel plate attached to the lower portion ofthe stationary colter will also prevent wear upon this part of my improvement, and the journal and bearing is further protected by the annular rim, which is formed integral with the rotary cutter. The bolt C is of such construction that the wear upon the parts of the same may be taken up, a washer being, when desired, inserted under its head. Wash er E is of the saine thickness as the depression 8. formed adjacent to the bearing, and it is inserted over end of the bolt adjacent to its screw-threaded portion, and said washer may be removed and a new one inserted to compensate for the wear. The pin or pins d are S5 attached adjacent to the hub of the rotary cutter in perforations formed for the reception thereof after said rotary cutter is cast..

I claim- 1.' The combination, in a colter for plows, of oo a stationary cutter perforated for the passage of the securing-bolt, a rotary cutter mounted on said bolt, a plate attached to the lower portion of said chtter and having its upper edge curved, as described, a curved rib or projection, b, formed above said perforation, substantially as set forth.

2. In a rotary colter for plows, a stationary Glitter havingaplate attached atitslou'er porl the loWei` portion of said cutter and having tion, and a rib or oil'set formed ahoveits jourits upper edge curved, as described, and a nal, in combination with a rotary cutter havcurved rib or shoulder, I), formed integral with ing radial arms with Cutting-edges, and one or said Cutter above the perforation thereof, sublnore pins which project therefrom, substanstantially as set forth.

tially as shown, and for the purpose set forth. I In testimony whereof I aix my signature 3. In a eolter for plows, a stationary Cutter in presence of two witnesses.

perforated for the )tissage of the bolt, aro- Y tary Cutter mountedl ou said bolt and having; CHARLES 7" MQCORMICK an annular flange projecting` from its central VitiiesseS:

portion, to form a recess for the reception of F. XV. JOHNSON,

the head of said bolt, a plate, B', attached to l JOHN E. BEALL. 

